Tactiks for 15 level - the final round.
Becouse you must have great start, you build one electricy tower on the mid and upgrade it for max.
Next you build next two electrics towers and upgrade it for max - mid/up.
Then you build stun tower on the mid. You dont upgrade it.
Next stepis build black hole towers - teleports on the right near the teleporter. 3-6 towers, you dont upgrade it.
Keep spells for golems and orcs.
Finally you build many electric towers at mid and upgrade it.
Good Luck :]]]